Title bread moldy or not

Specific Question how does temperature affect mold growth?

Hypothesis

The hypothesis was that the bread that was at room temperature would mold the fastest

Graph of Hypothesis

Variables

Independent Variable:the mold growth

Dependent Variable:the temperature

Vocabulary List That Needs Explanation

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General Plan

An experiment will be conducted to determine the effect of temperature on mold growth on homemade bread. The amount of mold growth will be measured on bread that is in different temperature settings over 10 days. Pictures will be taken every three days to track the growth. There will be 6 pieces of homemade bread, two pieces of bread will be placed in each of three locations. The locations are: a warm place, a fridge on a heater and a counter in a classroom. Data will be recorded once a day for 10 days. The independent variable is the temperature and dependent variable is the growth of the mold.

Safety Or Environmental Concerns

Experimental Design

(add the correct headings from the experimental design page before beginning)

Resources and Budget Table

Time Line

ake bread Mar 5 2012

bring bread and materials to school Mar 6, 2012
take picture of bread in each location Mar 6, 2012
check mold growth on each bread sample & write observations on: Mar 6,7,8,9,12,13,14,15,16,19,20
record mold growth seen on those dates
figure mean and make graph Mar 21, 2012

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Background Researh

w.csun.edu/scied/2-longitudinal/long_research/index.htm

used a grid squares were about 2mm took how much mold covered each square did that over time Although you cannot see them, there are probably millions spores in the air around you. These spores can accumulate in the dust around our home, which is kicked up through cleaning or even someone walking by Fungi are a great boon to humankind. Without yeast, there would be no bread Fungi are used to make antibiotics, Bread mold has a very simple lifecycle. It appears on the bread surface as a wind blown spore. With adequate moisture and nutrients from the bread, this spore sprouts and grows hair like structures on the bread surface. Once the mold attains a particular growth with paint brush like structures, it starts producing fruiting structures. These structures, sometimes called conidia, contain spores that are blown by wind and spreads to other bread surfaces

Article Source: http://EzineArticles.com/405845
bread is easily spoiled. To prevent this growth on bread surfaces, the bread can be baked at a temperature of 400 degrees or preserve the bread with small amounts of chemical

Detailed Procedure

Procedure
1. gather all materials
2. make bread
3. cut bread into 6 one inch slices
5. place 2 bread on each of three plates
6. bring bread on plates to school moistened with water
7. put 1 plate on a heater
8. put 1 plate at room temperature in the science room
9. put 1 plate in the fridge in the science room
10. take pictures of each plate in their location, record any mold growth
11. to record mold growth - put the millimeter grid over the top of each bread and count how many squares have mold
12. on the paper millimeter grid paper, color that number of squares that there was mold
13. repeat 10 though 12 every day for 14 days

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Results

This experiment was set up to see if the temperature affected mold growth. The results were that the bread did not mold. Bread was placed in three different temperature places: cold , warm and room temperature . Mold growth was measured in centimeters squared eight times. The mean of each bread piece was 0.

All Raw Data

Graphs

Photos

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Data Analysis

Conclusion

This experiment was to test the following question: Does temperature affect mold growth on bread? The independent variable was the temperature and the dependent variable was the mold growth. The result of this experiment is that no mold grew on any of the test pieces of bread.

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Discussion

An experiment was conducted to find out if :different temperatures accepted mold growth on bread ? The answer could not be determined because the bread was so dry no mold could grow. The hypothesis was the bread that was stored at room temperature would grow the most mold . The hypothesis was not supported by the experiment because no mold grew on the bread. because the the bread had no moisture after baking, making the bread unable to grow mold.

The biggest problem was the bread never grew mold. to make this experiment work we should have had a different kind of bread had been used or if moisture had been added then mold may have grown. There were no patterns or trends that could be identified within the information or data . there was not a strong relationship between the Temperature and mold growth because there was no mold growth If more information had been used the results might have helped grow penicillin which would help doctors,who need penicillin

Abstract

This experiment was to test the following question: Does temperature affect mold growth on bread? The independent variable was the temperature and the dependent variable was the mold growth. The result of this experiment is that no mold grew on any of the test pieces of bread. This was not hypothesized what was hypothesized was the bread at room temperature would grow mold the fastest